Stuart Turner U2.3 bar Twin - Manual (Page 6)

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2 LOCATION - GENERAL
2.11 Access: For emergencies and maintenance the pump must be
easily accessible.
2.12 Protection: The pump must be located in a dry position, frost free and
protected from freezing, particularly when installed in a loft (not
recommended).
2.13 Ventilation: Ensure an adequate air flow to cool the pump. Separate
the pump from other appliances that generate heat. An 80 mm (3 “) air
gap must be maintained around the pump.
2.14 Safety: The motor casing can become very hot under normal
operating conditions. Care must be taken to ensure it cannot be
touched during operation.
2.15 Water retention: If possible site the pump in a location where in the
unlikely event of a water leak, any spillage is contained or routed to
avoid electrics or areas sensitive to water damage.
2.16 Static inlet pressure: Before deciding where to position the unit, check to
ensure the static inlet head of water above the pump (Figs. 4 & 5), does not
exceed the maximum permitted limits.
2.17 Pump position: The pump must be positioned on its anti-vibration mounting
feet and as close to the water source as possible.
2.18 Ambient temperature: The pump must be sited in a location where the maximum
ambient temperature does not exceed 40 o C.
2.19 Pipework: For optimum performance pipework MUST be 22 mm. Pipework
should only reduce to 15 mm when entering terminal fitting.
2.20 Static outlet pressure: The static outlet head must also be within the maximum
requirement, see Figs. 4 & 5.
2.21 Noise: The anti-vibration mounting feet and flexible hoses which are supplied
as standard, as a precaution to reduce noise transmission, however care must
be taken when mounting the pump that any noise is not amplified through loose
panels or pipework. Do not screw down the pump.
2.22 Flexible hoses: Use only Stuart Turner supplied hoses.
2.23 Isolating valves: Separate isolating valves (non restrictive) must be fitted to
allow easy pump service.
2.24 Pump location: The pump location must be at floor level next to the hot water
cylinder or a level that is below the secondary tapping that feeds the pump. This
will ensure the pump has access to an air free water supply which is important for
trouble free operation (Figs. 4 & 5).
Pump location is also dependent on limitations of the static inlet and outlet heads
of the installation. For guidance on limitations and recommended location,
consult the following relevant section for water installation.
Either end of the pump is suitable for hot or cold water.